#include <iostream>
using namespace std;

class CRectangle {
  int x, y;
  public:
  void set_values(int,int);
  int area(void) {return (x*y);}
};

void CRectangle::set_values(int a, int b) {
  x = a;
  y = b;
}

int main()
{
  CRectangle rect;
  rect.set_values(3,4);
  cout << "area: " << rect.area() << endl;
  return 0;
}

